Test cases:
1.verify that for 'Join Case' Text should be "Want to join an ongoing case where you are an advocate'for advocate user.
2.verify that for 'Join Case' Text should be "Want to join an ongoing case where you are an advocate' for Litigant user.
3.verify that for 'Join Case' Text should be "Want to join an ongoing case where you are an advocate' for advocate clerk user.
Text should state "Want to join an ongoing case where you are an advocate'